gallium: Add utility helper for packing combined depth/stencil values.
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@ -440,6 +440,26 @@ util_pack_z(enum pipe_format format, double z)
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return 0;
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}
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}
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/**
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* Note: it's assumed that z is in [0,1] and s in [0,255]
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*/
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static INLINE uint
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util_pack_z_stencil(enum pipe_format format, double z, uint s)
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{
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switch (format) {
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case PIPE_FORMAT_S8Z24_UNORM:
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return util_pack_z(format, z) | s << 24;
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case PIPE_FORMAT_Z24S8_UNORM:
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return util_pack_z(format, z) | s;
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default:
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debug_print_format("gallium: unhandled format in util_pack_z_stencil()",
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format);
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assert(0);
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return 0;
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}
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}
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/**
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@ -460,19 +460,9 @@ clear_depth_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
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}
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else {
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/* clear whole buffer w/out masking */
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GLuint clearValue = util_pack_z(strb->surface->format, ctx->Depth.Clear);
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switch (strb->surface->format) {
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case PIPE_FORMAT_S8Z24_UNORM:
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clearValue |= ctx->Stencil.Clear << 24;
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break;
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case PIPE_FORMAT_Z24S8_UNORM:
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clearValue |= ctx->Stencil.Clear;
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break;
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default:
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assert(0);
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}
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GLuint clearValue = util_pack_z_stencil(strb->surface->format,
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ctx->Depth.Clear,
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ctx->Stencil.Clear);
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ctx->st->pipe->clear(ctx->st->pipe, strb->surface, clearValue);
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}
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}
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